William d



(No Modem W. D..GRAY.

SUPPORT P011 SHAKING SCREENS.

All( Il UNITED STATES PATENT OFFICE.

VILLIAM D. GRAY, OF MILVAUKE'E, WISCONSIN, ASSIGNOR TO THE EDVARD P.ALLIS-OOMPANY, OF SAME PLACE.

SUPPORT FOR SHAKlNG-SCREENS.

SPECIFICATION forming part of Letters Patent No. 454,131, dated June 16,1891. Application iiled May 26, 1890. Renewed November 29, 1890. SerialNo. 373,066. (No model.)

To @ZZ whom t may concern:

Beit known that I, WILLIAM D. GRAY, of Milwaukee, in t-he county ofMilwaukee and State of Wisconsin, have invented certain Improvements inSupports for Shaking-Screens, of which the following is a specification.

The present invention relates to an improved ,means for sustaining andadjusting the upper ends of the pendulous links used for sustaininghorizontal screens, which receive a circulatory horizontal motion.

In the accompanying drawings, Figure l is a transverse vertical sectionthrough one side of a machine, showing one or" my devices in positionthereon. Fig. 2 is a longitudinal vertical section.

Referring to the drawings, A represents a portion of the main frame; B,one side of the ordinary screen-frame, and O one ofthe pendent links bywhich the screen is sustained. At its lower end this link is fashionedinto a hook, which is engaged through an eye-plate b, bolted to thescreen-plate. At its upper end the link is also fashioned into a hook,which is engaged through a horizontal slot d in a vertical plate D,which lies transversely of the machine, the lower edge of the slot beingserrated, as shown, in order to admit of the upper end of the link beingadjusted horizontally to different positions therein to prevent it fromshifting out ot position accidentally. It will be observed that by thuschanging the upper end of the link from one notch to the other itslateral inclinationnlay be varied at will.

The plate D is provided at the upper edge with a flange d2, having atthe side a horizontal rod d3, seated in a corresponding slot in asustaining-plate E, to which it is secured by a transverse bolt d4. Thisconstruction permits the plate D to be moved horizontally along theplate E in the direction of the length of the machine, so as to shiftthe upper end of the link forward and backward, as required.

The plate E is provided at the upper edge with a lateral lip e, and issustained by a bolt e', passed upward through the top of the main frameand provided with the thumb-nut e2 on the upper end. By turning this nutthe plates and the link attached thereto may be raised or lowered tovary the height and inclination of the screen.

In order to hold the plate E the more securely in position, it isprovided with two vertical slots e3 to receive horizontal bolts e4,passed through the main frame and provided with thumb-screws e5.

Having thus described my invention, what I claim isl. In combinationwith a screen-sustaining link, the horizontally-slotted notched plate D,

and the plate E, fixed to the frame and connected with the plate D by ahorizontal slot and bolt, whereby the adjustment of the upper end of thelink both longitudinally and laterally of the machine is provided for.

2. In combination with the screen-sustaining link, thehorizontally-slotted and notched plate to sustain the link, the plate E,having the plate D fixed thereto for horizontal adjustment in adirection at I'ight angles to the length of the notched plate, asdescribed, and means, substantially as shown, for vertically adjustingthe plate E.

3. In combination with the main frame, the vertically and horizontallyslotted plate E, the vertical and horizontal screws connecting saidplate to the main frame, the plate D, connected to the plate E by ahorizontal slot and screw, and a screen-sustaining link connected toplate D.

In testimony whereof I hereunto set my hand, this 10th day of March,1890, in the presence of two attesting witnesses.

"WILLIAM D. GRAY.

Witnesses:

WM. BANNEN, EDW. F. BYRON.

